Smoke-consuming device



W. J. DOYLE SMOKE CONSUMING DEVICE June 24, 1930.

Filed Oct. 1; 1927 2 Sheets-Sheet 1 June 24, 1930. w, J, DOYLE 1,765,828

SMOKE CONSUMING DEVICE Filed Oct. 1, 1927 2 Sheets-Sheet 2 Ml/(1n? Beg/c WIL IAM J. DOYLE, or ornorivnn'r'nonro, nssitenonmo 'rnnwrti rnmson nna'rnn Patented June 24,

- r j COMPANY,OEY'GINQINNATL:91110, A oonPonA'rron or' OHIO sivroirnoonsuivrrnennvron f j Ap natibh filed October 1, 1927." swam; 223.443. I

This invention relates'to asmoke consum-.

ing d'evicewhich is especially adapted inthe herein disclosed embodiment to application the purpose statedwhichjis= adapted lZO IbG applied not onlyato newfurnace constructions but which 'may bejadded With great .15 facility and-small eapenseftov old installa tions,

' These and objectsf are' attained by I I the means. described-"herein andff'disclosed in the" accompanying drawings, in which:

Fig. 1 is a fragmental elevation of a furnaee structure v showing,iin'dotted'lines, a

' device of the invention mounted on the rear ofthe feeddoor.

4. Fig.2 is aview takenon line of Fig." 25 1, partfbeing ibroken-f'away.

Fig." 3 is a view taken on line of Fi'g. 4.- is a sideelevationalview'of a modified 'form of the device "of the 'invention,

operatively mounted" upon furnace door.

Fig. 5 is a fragmental'elev'ation of a regulating door and adjustment means. therefor.

It lsa widely recogniZed-factthat smoke results from incomplete combustion of fuel and is therefore"objectionable not only as a nuisance but as an economic loss.

fire box is consumed by .various agencies,

} and some of these havebeen' successful only injso far as they overcome 'a nuisance. Nu-

memes heretofore devised smokef consum+ ing apparatuses havejbeenof aniore expensivecons'truction'which has rendered their adaptation to domestic. use almost prohibitive.

r A In thepresent invention there is provided an apparatus which may be supported-directly upon the interior face of a furnace feed door and whieh swings into and out'of the furnace as-the door is closed ancl openecl.

An object ofthe inventionis to provide Devices 7 have been provlded'wherebysmoke from a end.

Practically all feed doors forfire boxes of furnaces are provided with some manner of adjustable air port for the purpose ofad- ."rnitting. airabove the fire in the firebox. The chief disadvantage attending the usualyf air port'lies inf-the fact that if openedtoo widely a chilling of the interior of the furnace results therefrom. I

In the "present structure the usual feed. Y

door 10 is provided adjacent the top with an opening 11 provided-with a-fclosuremeans 12 in order to partially or completely goy p.

close the'openi-nglllif desired; Asshown in: the drawings the closure 12 takes: the

form of hingedly: mounted dooritc'losin'g under the influence ofgravity and adapted "to be retained in semi or completely open condition 'by'means of'a cord or chain. 13, which in domestic installations .may be actuated from the fioor above.

lug 120 on the feed door or, frame co-op-.

The control for closure door 1 2'1'nayalso, I be of the type shown in Fig. 5, 'wherein'a erates with a pivotally mountedandnotched hold the latter in various open positions.

arm 130 which is carried by the door 12 to ;;f I

The'tuyere structure is preferably. a single casting comprising uppertand lower' flanges 14 and 15 andlatera'l flanges 16, the: edges f ofwhich abut the inne'r face 17 of the door closely adjacent the edges 18 of the' door thereby providing ahollow chamber between the inner face of the door and the interior of :the furnace. Thejbodyiof the tuyere extends downwardly at '19 substantially;-

in alignment with the edges' 18 of the door. 7

and is thendevelopedintoa'pluraliW. of

tapered hollow projections which are conveni'ently' shaped somewhat after the fashion of truncated rectangularpyramids and eX-"; tend inwardly toward "the fire-pot? The projections arev suitably rounded'at the co'rners to facilitate'casting of thetuyere member. "Each of the projections 20 has' a re duced' elongated opening 21 atits inne'rmost As will be noted from aninspection of Fig. 3 the/heat from the fire pot may rise between the projecting nozzles 20 so that the relatively large surface area of each of the nozzles of the y e m y be q y 1 10 1919 l fe ' uniformly heated. A bafl'leor apron 22 depends from and forms a continuation of the 'body portion 19 and is secured in position by being drawn into abutment with a plurality of lugs 23' extending from the bases 24: of the nozzles by means of a pair of stove bolts '25 extending through perforations 26 in said bases 24: and through perforations 27 in the baflle 22. Nuts 28 are used to draw and retain the; parts rigidly-fin position. The apron orbafile 22 terminates at a point 29 above" the bottom inner 1 facesBO of the nozzles thereby providing a relatively wide shallow vertical passage31 which provides communication between the bottom of the nozzles and. the air port 11.

The entire structure may be assembled and then secured upon the inner faceof' a furnace door by means of a pair of bolts 32 which extend through the body oft-he feed door and the body portion'f19of the tuyere.

.A pair of uncontrolled relatively small H perforations 111 are provided in the door 12 somewhat abovethe level of thelower edge 29ofthe bafilefl From the foregoing. .itwill be noted that the "device is inexpensively -manufactured of cast metal which requires no machining'and which 'is very readily assembled :on the ij ob by inserting and tighteningthe four bolts and; 32.

' .The operation of the device foubws P theinstallation is simple and: readily unders'tood. flA-fter the device "is" assembled, on a furnace door and fire started in the; fire pot,

, ,tlieheat from the fire pot renders the nozzles '20 quite thot especially at the bottom walls {draw a" quantity of air through the elon-. gated" opening 111 dependent uporr the amount of opening of the controldoor 12.

thereof; Thedraft in thefire box will i This air travels downwardly through the wide shallow passage 31 and immediately be-.

comes somewhat warmer 'As the airnow strikcsthe bottom interior faces 30'ofthe nozzles its temperature in increased and it "expands within said nozzles before 1t passes through the openings 21. 'As thc heated air passes through the openings 21 itis of nearly gases which it there Qen'counters.

uni'form' temperature with the smoke and g In this way the smoke, or unconsumed fuel ma gaseous statebecomes'mixed with'fresh oxygen from the outsideawithout chilling the smoke, so that combustion of the gases from the fuel'with" theoxygen from the outside .air takes place under mostfavorable .condir.

' -ti ons and the'smoke is completely consumed and additional'heat'is generated in the conibustion chamber ofthe furnace. The perforations '111 permit entry of'a small volume r of air at alltimes so as to eliminate the possibility of explosion of gases which may find [their way into the nozzles when the opening I 11' is 'c'omp'letely shut off by the control door skilled in the art.

12. Thus there is at all times a suflicientflow of air through the tuyere to prevent burning of the metal.

As shown inFig. 4 the tuyere structure. may takea somewhat simplified form where-j in the general structure is substantially like the device shown in Figs. 2'and 3 but in i which a forward, wall portion 33 'isprovided integral therewith for abutment with the inner face 170 of thefurnace'feed door. In. this form the wall 38 has a snout-like projecting member 8 1 in which the air inlet port 110 is disposed. 'Themo unting of the device is somewhat simplified since the'feed door 100 needs be but cut out as at 35 toadmit the snout-likeprojection:34and one orv two bolts such as36 inserted. throughzthe door-and tuyere to secure the parts together.

The tuyere has the usual hollow projections Y 200 and an integral baffle 220 which provides the wide shallow air passage 310.

It will be understood that the perforate ends.21 of the nozzles 20 will terminate atthe edge of the lire pot when the deviceis in. an operative positionln the furnace so that the heated air and oxygen isiprojected, into the combustion chamber' ofthefurnace. I

closed represents a, comparatively 'inex pensive and efficient" embodiment but thein vention' herein 'should be understoo chto be not-restricted to the exact struotural details The structure of the invention herein disshown, asrmodifications thereof and altera-.

tionswillreadily suggestthein -selves to those ,wha is claimed at 1. In adevice of the classdescribed the combination with a furnace. comprising a body having a fire box opening, a perforate feed door controlling saidopenin'g -ahollow ,tuyere secured tothe door and'ha'Ving its edges in abutment with the inner face'gthere rectangular pyramidal shape extending inwardly intofthe fire box, said nozzles having .perforations in their'inne-rmost ends: and

battle means disposed intermediate the opposite ends of the nozzle and the door whereby movement of air through .thefperforation in the door is directed downwardly over the bottom walls of the nozzles for heating prior ;to its exit through-the perforation in the of, and having hollow nozzles oftruncated 2. 'As a new article of manufacture a i tuyere-structure comprising an integral castng providing a plurallty of straightwalled funnel-like projections adapted for. mount-- I ing on the inner faceof a. furnace fuelfeed" I door and asingle baffle member extending across the ends of SZUCl projections.

- In a clevice of the class describedithe combination of a furnace fuel. feed door arranged for the admisslon of air adjacent 1ts top portlon, a single tuyere casting secured on the inner facejof thedoor and.

providing a plurality of tapered nozzles extending side by side across the width of the door, the reduced ends of the nozzles being perforate and adapted to extend into a furnace fire box, a single baffle plate secured in spaced relation with the inside face of the I said fuel feed door and providing a wide shallow air passage, said baflle extending across and closing the upper portions of the enlarged'ends of the fu'nnel-like projections and terminating in spaced relation to the bottom portion of the tuyere.

In testimony whereof, I have hereunto subscribed my name this 23d day of'September, 1927.

WILLIAM J. DOYLE. 

